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Finding the Fourth Proportional to 14,685.01, 20,265.32 and 7,970.63

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Solution

The fourth proportional to 14,685.01, 20,265.32 and 7,970.63 is: 10,999.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,685.01 : 20,265.32 = 7,970.63 : x
  2. Step 2: Convert to fraction form
    14,685.01/20,265.32 = 7,970.63/x
  3. Step 3: Cross multiply
    14,685.01x = 20,265.32 × 7,970.63
  4. Step 4: Simplify right side
    14,685.01x = 161,527,438.14
  5. Step 5: Solve for x
    x = 161,527,438.14/14,685.01
  6. Step 6: Final answer
    x = 10,999.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.